ethernet: fix DMAC check and skip unnecessary ones (VPP-1868)

[vpp.git] / src / vnet / ip / ip4_forward.c

diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index 231912b..b76da0a 100644 (file)
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -640,6 +640,8 @@ void
 ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable)
 {
   ip4_main_t *im = &ip4_main;
+  vnet_main_t *vnm = vnet_get_main ();
+  vnet_hw_interface_t *hi = vnet_get_sup_hw_interface (vnm, sw_if_index);
 
   vec_validate_init_empty (im->ip_enabled_by_sw_if_index, sw_if_index, 0);
 
@@ -664,6 +666,11 @@ ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable)
   vnet_feature_enable_disable ("ip4-multicast", "ip4-not-enabled",
                               sw_if_index, !is_enable, 0, 0);
 
+  if (is_enable)
+    hi->l3_if_count++;
+  else if (hi->l3_if_count)
+    hi->l3_if_count--;
+
   {
     ip4_enable_disable_interface_callback_t *cb;
     vec_foreach (cb, im->enable_disable_interface_callbacks)